CN108476107B - Narrowband PRACH with multiple tones jump distance - Google Patents

Abstract

Due to can be carried out by multiple users using NB finite dimensional and may biggish overlay area, because this timing offset estimation may exceed NCP.It can be by jumping distance, the inaccuracy of Lai Gaishan timing estimation using more than one tone to PRACH.Then, device can send the first tone of PRACH, send the second tone of PRACH according to the first tone the first jump distance apart.Then, device can send the third tone of PRACH, according to the 4th tone for sending PRACH at a distance of the second jump distance with third tone.Second jump distance is likely larger than the first jump distance.Device can also send the additional tone of PRACH using random jump distance.Reception device can receive transmitted PRACH, and determine phase estimation based on the set of tones with different jump distances.

Description

Narrowband PRACH with multiple tones jump distance

Cross reference to related applications

This application claims enjoy " Narrow Band PRACH with Tone submitting, entitled on December 18th, 2015 The U.S.Provisional Serial No.62/269,799 of Hopping Distance Based on CE Level " and 2016 9 The moon 29 " Narrow Band PRACH with Multiple Tone Hopping Distances " submitting, entitled U.S. Patent Application Serial Number No.15/279,991 priority, therefore the full content for by reference applying for this two parts is bright Really it is incorporated herein.

Technical field

In summary, the application relates generally to communication system, specifically, this application involves narrowband (NB) wireless communications In Physical Random Access Channel (PRACH).

Background technique

Wireless communication system is disposed, widely in order to provide such as phone, video, data, messaging and broadcast etc Various telecommunications service.Typical wireless communication system, which can be used by sharing available system resource, to be supported and multiple use The multiple access technology that family is communicated.The example of these multiple access technologies includes CDMA (CDMA) system, time division multiple acess (TDMA) System, frequency division multiple access (FDMA) system, orthogonal frequency division multiple access (OFDMA) system, single-carrier frequency division multiple access (SC-FDMA) system and TD SDMA (TD-SCDMA) system.

These multiple access technologies have been adopted in a variety of telecommunication standards, with provide enable different radio equipment city, country, The puppy parc communicated in regional, even global rank.A kind of exemplary telecommunications standard is long term evolution (LTE).LTE is For the enhancing set of the mobile standard of Universal Mobile Telecommunications System (UMTS) of third generation partner program (3GPP) publication. LTE is designed to be used SC-FDMA using OFDMA, on uplink on the uplink and uses multiple-input and multiple-output (MIMO) antenna technology supports mobile broadband to access will pass through raising spectrum efficiency, reduction expense and raising service.But With continuing to increase for mobile broadband access demand, there is the demands for further increasing LTE technology.In addition, these are improved It is applicable to other multiple access technologies and the telecommunication standard using these technologies.

Narrowband (NB) wireless communication (for example, NB Internet of Things (NB-IOT)) is faced with many challenges.It has may quilt The finite frequency dimension of multiple user sharings.For example, NB-IOT can take up single resource block (RB), proposed to NB PRACH Unique challenge.Biggish overlay area may cause the timing off-set of NB-IOT beyond general cyclic prefix (NCP) institute energy Except the range of compensation.In addition, equipment is also possible to be faced with different environment based on device location and installation site.

Summary of the invention

In order to have a basic understanding to one or more aspects of the present invention, it is shown below to the letter in terms of these It is single to summarize.The summarized section is not the exhaustive overview to all contemplated aspects, nor be intended to identify it is in all aspects crucial or Range in terms of important element or description are any or whole.Its sole purpose is that one or more side is presented with simple form Some designs in face, using the prelude as the detailed description stated below.

It is operated in different communication environments due to imagining NB-IOT equipment, based on the varying environment situation with equipment Corresponding coverage enhancement (CE) is horizontal, and carrying out classification to equipment becomes convenient.Due to can be carried out by multiple users using The dimension of NB is limited and there may be big overlay areas, because this timing offset estimation may exceed NCP.Can pass through to PRACH jumps distance, the inaccuracy of Lai Gaishan timing estimation using more than one tone.

This paper presents for for example being improved by jumping distance using multiple tones between multiple tones of PRACH The many aspects of the accuracy of timing estimation.

Method, computer-readable medium and device are provided in the one aspect of the application.Device sends the of PRACH One tone, according to the second tone for sending PRACH at a distance of the first jump distance with first tone.Then, which sends out Send the third tone of PRACH and the 4th tone of PRACH.Third tone, which can be located at, jumps distance with the second of the second tone, Or the 4th tone can be located at and the three-toned secondth jump distance.Second jump distance be likely larger than the first jump away from From.In addition, the device can also send the additional tone of PRACH using random jump distance.

In order to achieve the foregoing and related purposes, one or more aspects include described in detailed below and claims In the feature specifically noted.Certain example features of one or more aspects are described in detail in following description and drawings.But It is that these features only show can be used the certain methods in the various methods of the basic principle of these various aspects, and this Specification is intended to include all such aspects and its equivalent.

Detailed description of the invention

Fig. 1 is the figure for the example for showing wireless communication system and accessing network.

Fig. 2A, 2B, 2C and 2D are that DL frame structure, the DL channel in DL frame structure, UL frame structure and UL frame is shown respectively The figure of the LTE example of UL channel in structure.

Fig. 3 is the figure for showing the example of evolution node B (eNB) and user equipment (UE) in access network.

Fig. 4 shows the fixation and random tone jump in PRACH according to proposed many aspects.

Fig. 5 shows making for the different tones jump distance for same transmitting according to proposed many aspects With.

Fig. 6 shows many aspects for receiving PRACH tone according to proposed many aspects.

Fig. 7 shows many aspects for receiving PRACH tone according to proposed many aspects.

Fig. 8 A shows a kind of many aspects of wireless communication system according to proposed many aspects.

Fig. 8 B shows the corresponding relationship of tone jump distance and CE level according to proposed many aspects.

Fig. 9 is shown and the horizontal corresponding multiple transmission regions of different CE according to proposed many aspects Multiplexing.

Figure 10 is shown exemplary between the sound reconciled data resource of PRACH according to proposed many aspects Mapping.

Figure 11 is the flow chart of a kind of method of wireless communication.

Figure 12 is the conceptual data flow figure of the data flow between the different units/component shown in exemplary means.

Figure 13 is the figure for showing the hard-wired example of the device for using processing system.

Figure 14 is the flow chart of a kind of method of wireless communication.

Figure 15 is the conceptual data flow figure of the data flow between the different units/component shown in exemplary means.

Figure 16 is the figure for showing the hard-wired example of the device for using processing system.

Specific embodiment

Detailed description with reference to the accompanying drawing is intended as the explanation of various configurations, described herein without being intended to show Design concept only can pass through these configuration realize.For the purpose provided to the comprehensive understanding of various design concepts, in detail Describing in detail bright includes detail.However, it is obvious to a person skilled in the art that without these specific details Also these design concepts can be implemented.In order to avoid these design concepts fog, in some examples, well known structure and portion Part is shown in block diagram form.

Several aspects of telecommunication system are provided now with reference to various device and method.It will in the following detailed description Illustrate these device and method, and is shown in the accompanying drawings by each piece, component, circuit, process, algorithm etc. (being referred to as " element ") These device and method out.Electronic hardware, computer software or their any combination can be used to realize these elements.Extremely It is implemented as hardware or software in these elements, depending on specifically application and the design constraint applied to whole system.

For example, any combination of any part or multiple elements of an element or element, may be implemented At " processing system " including one or more processors.The example of processor includes microprocessor, microcontroller, graphics process Unit (GPU), central processing unit (CPU), application processor, digital signal processor (DSP), reduced instruction set computing (RISC) processor, system on chip (SoC), baseband processor, field programmable gate array (FPGA), programmable logic device (PLD), it state machine, gate logic, discrete hardware circuit and is configured as executing through various functions described herein Other appropriate hardware.One or more processors in processing system can execute software.Software should be construed broadly as Refer to instruction, instruction set, code, code segment, program code, program, subprogram, component software, application, software application, software Packet, routine program, subroutine, object, executable file, the thread of execution, process, function etc., no matter it is referred to as Software, firmware, middleware, microcode, hardware description language or other terms.

Therefore, in one or more exemplary embodiments, functionality described herein can with hardware, software or its Any combination is realized.When implemented in software, these functions can be stored or is encoded on computer-readable medium One or more instruction or code.Computer-readable medium includes computer storage medium.Storage medium can be computer capacity Any usable medium enough accessed.By way of example rather than the mode of limitation, these computer-readable mediums can wrap Include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), disc memory, magnetic Disk storage, other magnetic storage apparatus, aforementioned type computer-readable medium combination or can be used in storage can be by Computer access, with instruction or data structure form computer-executable code any other medium.

Fig. 1 is the figure for showing a kind of wireless communication system and the example for accessing network 100.Wireless communication system (its Referred to as wireless wide area network (WWAN)) it include base station 102, UE 104 and evolution block core (EPC) 160.Base station 102 can wrap Include macrocell (high power cellular base station) and/or small cell (low-power cellular base station).Macrocell includes eNB.Small cell Including Femto cell, picocell and Microcell.

(it is referred to as evolved Universal Mobile Telecommunications System (UMTS) grounding wireless access network network (E- for base station 102 UTRAN it)) is docked by backhaul link 132 (for example, S1 interface) with EPC 160.Among other functions, base station 102 One or more of following functions can be executed: the transmission of user data, wireless channel encryption and decryption, integrity protection, Header-compressed, mobile control function (for example, switching, dual link), Inter-Cell Interference Coordination, connection foundation and release, load are flat Weighing apparatus, the distribution of Non-Access Stratum (NAS) message, the selection of NAS node, synchronous, Radio Access Network (RAN) is shared, multimedia broadcasting Multicast service (MBMS), user and equipment tracking, RAN information management (RIM), paging, positioning and the transmission of alert message. Base station 102 can by backhaul link 134 (for example, X2 interface) and (for example, pass through EPC 160) directly or indirectly to one another into Row communication.Backhaul link 134 can be wired or wireless.

Base station 102 can wirelessly be communicated with UE 104.Each of base station 102 can be covered for corresponding geography Cover area provides communication overlay.There may be the geographical coverage areas 110 of overlapping.For example, small cell 102 ' can have with The equitant overlay area 110 ' in overlay area 110 of one or more macro base stations 102.Not only included small cell but also included macro small The network in area can be referred to as heterogeneous network.Heterogeneous network also may include ownership evolution node B (eNB) (HeNB), and ownership is drilled Into node B service can be provided to the group that is restricted of referred to as closed user group (CSG).Between base station 102 and UE 104 Communication link 120 may include from UE 104 to base station 102 uplink (UL) (it is also known as reverse link) transmission and/ Or downlink (DL) (it is also referred to as forward link) transmission from base station 102 to UE 104.Communication link 120 can be used Mimo antenna technology, including spatial reuse, beam forming, and/or transmitting diversity.These communication links can be by one or Multiple carrier waves.Up to Yx MHz (the x component in total in the transmission for each direction can be used in base station 102/UE 104 Carrier wave) carrier wave polymerization in the bandwidth of each carrier wave up to Y MHz (for example, 5,10,15,20MHz) distributed.These carrier waves can To be adjacent to each other either not adjacent to each other.The distribution of carrier wave can be asymmetrical (for example, and needle about DL and UL UL is compared, more or less carrier wave can be distributed for DL).These component carriers may include principal component carrier wave and one A or multiple auxiliary component carrier waves.Principal component carrier wave is properly termed as main plot (PCell), and auxiliary component carrier wave is properly termed as assisting Cell (SCell).

Wireless communication system can also include Wi-Fi access point (AP) 150, the Wi-Fi access point (AP) 150 via Communication link 154 in 5GHz unlicensed spectrum is communicated with Wi-Fi station (STA) 152.When being led in unlicensed spectrum When letter, STA 152/AP 150 can be executed clear channel assessment (CCA) (CCA) before being communicated, to judge that the channel is It is no available.

Small cell 102 ' can license and/or operated in unlicensed spectrum.When in unlicensed spectrum When being operated, small cell 102 ' can not permitted using LTE and use with identical 5GHz used in Wi-Fi AP 150 It can frequency spectrum.Small cell 102 ' in unlicensed spectrum using LTE can promote the covering of access network and/or increase access The capacity of network.LTE in unlicensed spectrum can be referred to as LTE unlicensed (LTE-U), license auxiliary access (LAA) or Person MuLTEfire.

Base station millimeter wave (mmW) 180 can be operated in mmW frequency and/or approximation mmW (near mmW) frequency.Extremely high frequency (EHF) be RF in electromagnetic spectrum a part.EHF has the range of 30GHz to 300GHz, and with 1 millimeter to 10 millis Wavelength between rice.Wireless waveform in the frequency range is properly termed as millimeter wave.Approximate mmW can be extended down into 100 millimeters of 3GHz frequency.Hyperfrequency (SHF) frequency band extends between 3GHz to 30GHz, also referred to as centimeter wave.It uses The communication of mmW/ approximation mmW radio band has high path loss and short distance.The base station mmW 180 can be used wave beam at Shape 184 compensates the high path loss and short distance.

EPC 160 may include mobile management entity (MME) 162, other MME 164, gateway 166, multi-media broadcast Broadcast multicast service (MBMS) gateway 168, broadcast/multicast service center (BM-SC) 170 and packet data network (PDN) gateway 172. MME 162 can be communicated with home subscriber server (HSS) 174.MME 162 is between processing UE 104 and EPC 160 Signaling control node.In general, MME 162 provides carrying and connection management.All user's Internet protocol (IP) groupings are logical Gateway 166 is crossed to transmit, wherein gateway 166 connects himself to PDN Gateway 172.PDN Gateway 172 provides UE IP Address distribution and other functions.PDN Gateway 172 and BM-SC 170 are connected to IP service 176.IP service 176 may include mutual Networking, Intranet, IP multimedia subsystem (IMS) and PS stream service (PSS) and/or other IP service.BM-SC 170 can be mentioned For the function of supplying and transmit for MBMS user service.BM-SC 170 may be used as content supplier's MBMS transmission Inlet point can be used for the authorization in public land mobile net (PLMN) and initiate MBMS carrying service, and can be used for dispatching MBMS transmission.MBMS gateway 168 can be used for the base to the region multicast broadcast single frequency network (MBSFN) for belonging to broadcast special services It stands 102 distribution MBMS business, and session management (beginning/stopping) and related with the eMBMS charge information of collection can be responsible for.

Base station can also be referred to as node B, evolution node B (eNB), access point, base station transceiver, wireless base station, wireless Transceiver, transceiver function, basic service set (BSS), extended service set (ESS) or some other appropriate term.Base station 102 provide the access point for EPC 160 for UE 104.The example of UE 104 includes cellular phone, smart phone, session setup Agreement (SIP) phone, laptop computer, personal digital assistant (PDA), satellite radio, global positioning system, multimedia Equipment, video equipment, digital audio-frequency player (for example, MP3 player), camera, game console, tablet device, intelligence Equipment, wearable device or any other like function device.UE 104 can also be known as station, movement station, subscriber station, Mobile unit, subscriber unit, radio-cell, remote unit, mobile device, wireless device, wireless telecom equipment, remote equipment, Mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held device, user agent, mobile client, Client or some other term appropriate.

Referring again to Fig. 1, in certain aspects, UE 104/eNB 102 may include PRACH component 198.In UE 104 In, PRACH component 198 can be configured as using multiple jumps apart from (e.g., including it is first distance, longer than first distance Second distance, and/or random jump distance) send the tone of PRACH.PRACH component 198 may include in such as Figure 12 Component 1208,1210.PRACH component 198 can be similarly included in eNB 102, and the PRACH component 198 can connect from UE Receive have multiple jumps apart from (e.g., including first distance, second distance longer than first distance, and/or random jump away from From) PRACH tone.PRACH component 198 at eNB can be determined based on the tone sets with different jump distances Phase estimation.

Fig. 2A is the Figure 200 for showing the example of the DL frame structure in LTE.Fig. 2 B is in the DL frame structure shown in LTE Figure 23 0 of the example of channel.Fig. 2 C is the Figure 25 0 for showing the example of the UL frame structure in LTE.Fig. 2 D is the UL shown in LTE Figure 28 0 of the example of channel in frame structure.Other wireless communication techniques can have different frame structures and/or different letters Road.In LTE, frame (10ms) can be divided into 10 evenly sized subframes.Each subframe may include two consecutive hourss Gap.Resource grid can be used to indicate that the two time slots, each time slot include one or more concurrent resource block (RB) (its Referred to as physics RB (PRB)).The resource grid is divided into multiple resource units (RE).In LTE, for general cyclic prefix For, a RB includes that 7 continuous symbols in 12 continuous subcarriers and time domain in frequency domain (are OFDM for DL Symbol；It is SC-FDMA symbol for UL), 84 RE in total.For extended cyclic prefix, a RB includes frequency domain In 12 continuous subcarriers and time domain in 6 continuous symbols, 74 RE in total.Amount of bits entrained by each RE depends on In modulation scheme.

As shown in Figure 2 A, some RE in these RE carry DL and refer to (pilot tone) signal (DL-RS), at for UE Channel estimation.DL-RS may include: cell special reference (CRS) (it is also sometimes referred to as common RS), UE dedicated reference Signal (UE-RS) and channel state information reference signals (CSI-RS).Fig. 2A shows CRS corresponding to antenna port 0,1,2 Correspond to antenna port 5 (it is marked as R5) and CSI-RS pairs with 3 (it is respectively labeled as R0, R1, R2 and R3), UE-RS It should be in antenna port 15 (it is labeled as R).Fig. 2 B shows the example of the various channels in the DL subframe of frame.Physical control format Indicator channel (PCFICH) is located within the symbol 0 of time slot 0, and carries and be used to indicate physical downlink control channel (PDCCH) whether occupying the control format indicator (CFI) of 1,2 or 3 symbol, (Fig. 2 B, which is shown, occupies 3 symbols PDCCH).PDCCH carries down link control information (DCI) in one or more control channel elements (CCE), each CCE Including 9 RE groups (REGs), each REG includes four continuous RE in an OFDM symbol.UE, which is configured to have, carries DCI The dedicated enhanced PDCCH (ePDCCH) of UE.EPDCCH can have 2,4 or 8 RB to (Fig. 2 B shows two RB pairs, Each subset include RB to).Physical mixed automatic repeat request (ARQ) (HARQ) indicator channel (PHICH) also is located at Within the symbol 0 of time slot 0, and is carried based on physical uplink shared channel (PUSCH) and be used to indicate HARQ confirmation (ACK)/negative ACK (NACK) feedback HARQ indicator (HI).Primary synchronization channel (PSCH) is located in the subframe 0 and 5 of frame Within the symbol 6 of time slot 0, and carry the primary synchronization signal (PSS) for being used to determine subframe timing and physical layer identifications by UE.It is auxiliary Within the symbol 5 for the time slot 0 for helping synchronizing channel (SSCH) to be located in the subframe 0 and 5 of frame, and carries and be used to determine physics by UE The auxiliary synchronous signal (SSS) of layer cell identifiers group number.Based on physical layer identifications and physical-layer cell identifier group #, UE It can determine physical cell identifier (PCI).Based on the PCI, UE can determine the position of aforementioned DL-RS.Physical Broadcast Channel (PBCH) within the symbol 0,1,2,3 of the time slot 1 in the subframe 0 of frame, and Master Information Block (MIB) is carried.MIB provides DL system RB quantity, PHICH configuration and system frame number (SFN) in regiment commander's width.Physical down link sharing channel (PDSCH), which carries, to be used User data, the broadcast system information (for example, system information block (SIB)) and paging message sent not over PBCH.

As shown in FIG. 2 C, some RE in multiple RE carry demodulated reference signal (DM-RS), for the letter at eNB Road estimation.In addition, UE can send detection reference signal (SRS) in the last symbol of subframe.The SRS can have comb Shape structure, UE can send SRS on one in these combs combs.The SRS can be used to carry out channel quality estimation in eNB, To realize the scheduling of dependent Frequency on UL.Fig. 2 D shows the example of the various channels in the UL subframe of frame.Physical accidental connects Entering channel (PRACH) can be configured and within one or more subframes in frame based on PRACH.PRACH may include one Six in a subframe are RB pairs continuous.PRACH allows UE to execute initial system access, and realizes that UL is synchronous.Physical uplink chain Road control channel (PUCCH) can be located on the edge of UL system bandwidth.PUCCH carries such as scheduling request, channel quality and refers to The uplink of mark (CQI), precoding matrix indicators (PMI), order designator (RI) and HARQ ACK/NACK feedback etc Road controls information (UCI).PUSCH carries data, and can be also used for carrying buffer status reporting (BSR), power headroom report Accuse (PHR) and/or UCI.

Fig. 3 is the block diagram that eNB 310 is communicated with UE 350 in access network.It, will be from EPC's 160 in DL IP grouping is supplied to controller/processor 375.Controller/processor 375 realizes layer 3 and 2 function of layer.Layer 3 includes radio resource (RRC) layer is controlled, layer 2 includes Packet Data Convergence Protocol (PDCP) layer, wireless spread-spectrum technology (RLC) layer and media access control (MAC) layer.Controller/processor 375 provide: connect with the broadcast of system information (for example, MIB, SIB), RRC control (for example, RRC connection paging, RRC connection are established, RRC connection is modified and RRC Connection Release), the movement between wireless access technology (RAT), And the associated rrc layer function of measuring configuration for UE measurement report；With header compress contracting, safety (encryption, solution Close, integrity protection, integrity verification) and the switching support associated PDCP layer function of function；With upper-layer packet data units (PDU) transmission passes through the error correction of ARQ, connection, segmentation and the recombination of RLC service data unit (SDU), RLC data PDU Again the associated rlc layer function of rearrangement of segmentation and RLC data PDU；And with logic channel and transmission channel it Between mapping, MAC SDU be multiplexed on transmission block (TB), from TB demultiplex MAC SDU, scheduling information report, pass through HARQ Error correction, priority processing and priority of logical channels associated MAC layer function is set.

Emit (TX) processor 316 and receive (RX) processor 370 and realizes layer 1 associated with various signal processing functions Function.1 (it includes physics (PHY) layer) of layer may include the forward error correction of error detection, transmission channel to transmission channel (FEC) coding/decoding, intertexture, rate-matched, be mapped to physical channel, the modulating/demodulating of physical channel and mimo antenna Processing.TX processor 316 is based on various modulation schemes (for example, binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M phase phase-shift keying (PSK) (M-PSK), M rank quadrature amplitude modulation (M-QAM)), to handle the mapping of signal constellation (in digital modulation).With It afterwards, can be by coding and modulated symbol segmentation at multiple parallel streams.Then, each stream can be mapped to OFDM load It is multiplexed by wave with reference signal (for example, pilot tone) in the time and/or frequency domain, then uses inverse Fourier transform (IFFT) each stream is combined together to generate the physical channel for carrying time-domain OFDM symbol stream.The OFDM is flowed in space Upper carry out precoding, to generate multiple spatial flows.Come channel estimator 374 channel estimation value be determined for coding and Modulation scheme and for realizing spatial manipulation.Channel estimation value can be from the reference signal sent of UE 350 and/or channel shape It is obtained in condition feedback.Then, each spatial flow can be supplied to different antennas 320 via individual transmitter 318TX respectively. Each transmitter 318TX can respectively be modulated RF carrier wave using corresponding spatial flow, to be used for transmission.

At UE 350, each receiver 354RX receives signal by its respective antenna 352.Each receiver 354RX Restore the information being modulated in RF carrier wave, and provides this information to reception (RX) processor 356.At TX processor 368 and RX It manages device 356 and realizes 1 function of layer associated with various signal processing functions.RX processor 356 can execute sky to the information Between handle, to restore to go to any spatial flow of UE 350.If multiple spatial flows are destined to UE 350, RX processor 356 It can be combined into single OFDM symbol stream.Then, RX processor 356 uses Fast Fourier Transform (FFT) (FFT), by OFDM Symbol stream transforms from the time domain to frequency domain.Frequency-region signal includes the independent OFDMA symbol stream for each subcarrier of ofdm signal. The most probable signal constellation point sent by determining eNB 310, to restore and demodulate the symbol and ginseng on each subcarrier Examine signal.These soft-decisions can be based on the 358 calculated channel estimation value of institute of channel estimator.Then, these soft are sentenced It is certainly decoded and deinterleaves, to restore the data and control signal that eNB 310 is initially sent on the physical channel.Then, will These data and control signal are supplied to controller/processor 359, and controller/processor 359 realizes layer 3 and 2 function of layer.

Controller/processor 359 can be associated with the memory 360 for storing program code and data.Storage Device 360 is properly termed as computer-readable medium.In UL, controller/processor 359 is provided between transmission channel and logic channel Demultiplexing, packet recombining, decryption, header decompression and control signal processing, with restore from EPC 160 IP grouping.Control Device/processor 359 processed is also responsible for carrying out error detection using ACK and/or NACK agreement, to support HARQ operation.

Similar to combining the DL of eNB 310 to transmit described function, controller/processor 359 is provided: with system information (for example, MIB, SIB) capture, RRC connection and the associated rrc layer function of measurement report；With header compress contracting, peace (encryption, decryption, integrity protection, integrity verification) associated PDCP layer function entirely；Transmission with upper layer PDU passes through ARQ Error correction, connection, segmentation and the recombination of RLC SDU, the segmentation again of RLC data PDU and the rearrangement of RLC data PDU Associated rlc layer function；Mapping, MAC SDU between logic channel and transmission channel are multiplexed on TB, demultiplex from TB It is arranged with MAC SDU, scheduling information report, by the error correction of HARQ, priority processing and priority of logical channels associated MAC layer function.

The derived channel estimation amount from the reference signal or feedback that eNB 310 is sent of channel estimator 358, can be by TX Processor 368 uses, and to select coding appropriate and modulation scheme, and facilitates spatial manipulation.It can be via respective The spatial flow generated of TX processor 368 is supplied to different antennas 352 by transmitter 354TX.Each transmitter 354TX can To be modulated using respective spatial flow to RF carrier wave, to be transmitted.

In a manner of being similar to described in the receiver function combined at UE 350, eNB 310 handles UL transmission. Each receiver 318RX receives signal by its respective antenna 320.Each receiver 318RX recovery is modulated to RF carrier wave On information, and provide this information to RX processor 370.

Controller/processor 375 can be associated with the memory 376 for storing program code and data.Memory 376 can be referred to as computer-readable medium.In UL, controller/processor 375 is provided between transmission channel and logic channel Demultiplexing, packet recombining, decryption, header decompression, control signal processing, with restore from UE 350 IP grouping.It can be with EPC 160 will be supplied to from the IP of controller/processor 375 grouping.Controller/processor 375 be also responsible for using ACK and/ Or NACK agreement carries out error detection, to support HARQ operation.

Due to the finite frequency dimension of narrowband, NB wireless communication is related to unique challenge.For example, NB IOT may quilt It is limited to the single resource block (for example, 200Hz) of system bandwidth.The resource block in common LTE carrier wave can be used in the narrow band communication It is deployed in " band in ", is perhaps deployed in the not used resource block in the protection band of LTE carrier wave or " independence " is deployed in In dedicated frequency spectrum.Multiple users (for example, UE) may use the narrowband.Although in the specific time, in these UE more only UE is movable, but NB communication should support such multi-user's capacity.

In addition, needing the equipment in the environment of different coverage enhancement (CE) levels by consideration, NB may need to provide Depth covering.For example, some equipment may need the up to CE of 20dB, bigger uplink TTI is caused to be bound, further Limit time resource.

In addition, NB-IOT communication may also relate to biggish radius of society (for example, up to about 35km).Therefore, this is logical Letter may relate to long delay (for example, 200 μ s), this may relate to longer cyclic prefix (CP) length.

In order to realize effectively, NB communication should provide the false alarm rate lower than 1%, and approximately less than 1% omission factor.

Transmitter may need to estimate that the timing off-set between the transmitter and corresponding receiver is estimated.Therefore, this when Sequence offset should preferably be located within general cyclic prefix (NCP), for example, about < 4.7 μ s.

It may be beneficial that narrow band communication, which includes for providing the time division duplex of two-way communication mode (TDD), wherein in TDD In, the transmission in each direction can occur on the same carrier wave of different time slots.For example, can be configured by TBB (for example, 1ms, 2ms, 3ms) limit continuous UL subframe.

PRACH for narrow band communication may include the monotone UE as baseline.PRACH may be configured such that transmitting Residual frequency error between machine and receiver (for example, between UE and eNB) is located within +/- 50Hz.Monotone PRACH design It may include fixed jump distance and/or random jump distance.For the communication between transmitter and receiver, Ke Nengcun In at least two error sources.First, which may be comprising frequency error, second, which may include timing off-set.

PRACH may include at least four symbols.Two symbols of PRACH can be sent on identical tone, with Estimate in frequency error.Two symbols can be sent in different tones, for the timing estimation after frequency offset compensation. When different tones sends two symbols, timing off-set will stay in that phase difference.The phase difference can be extracted, to know The not timing off-set.Four symbols are only merely that for PRACH additional assemble of symbol can be used in an example.

Fig. 4 shows the exemplary NB PRACH 400 including four tones 402,404,406,408, is related to these tones Between fixation tone jump and random tone jump.Each of tone 402,404,406,408 tone only occupies system Single resource block in bandwidth.In addition, PRACH pitch interval can be smaller compared with Common data transmission.Therefore, at one In RB bandwidth, may exist more tones.In the transmission of common LTE data, the common pitch interval based on 15KHz, LTE number According to 1RB=12 tone of transmission.For PRACH, pitch interval can be smaller.For example, in LTE, PRACH pitch interval It can be 15khz/12, form 12*12=144 tone.But in the narrowband example of such as NB-IOT PRACH etc, Pitch interval can be 15khz/16, so a total of 16*12 tone in 1RB.This is only merely smaller NB PRACH One example at interval, it is understood that there may be other such intervals more smaller than the transmission of common LTE data.

The first tone 402 of PRACH and the second tone 404 are spaced a fixed tone and jump distance 410.Similarly, Three symbols 406 and the 4th symbol 408 can be spaced the second fixed tone jump distance 412.Second tone 404 and third tone 406 can be spaced random jump distance 414.For example, first tone 402 is in sound if fixed tone jump distance 410 is 5 Adjusted position 0, then the second tone 404 will be in tone locations 5.Third tone 406 is not necessarily in tone locations 10.On the contrary, third Tone 406 may be at tone 7 or tone locations 2, for example, in the second tone 404 with PRACH at a distance of the position of random distance It sets.Then, the 4th tone 408 will comply with the fixed range 412 with third tone 406.The fixed range 412 can with it is fixed away from (for example, 5) identical from 410.In this example embodiment, if third tone is in tone locations 2, the 4th tone 408 will be in sound Adjusted position 7.If then the 4th tone will be in tone locations 12 on the contrary, third tone is in tone locations 7.But it is fixed Distance 412 can be different from fixed range 410.

As described above, the resource block in common LTE carrier wave can be used to be deployed in " in band " in narrow band communication.This may be right Broadband LTE is interfered, and the interference is more serious in high SNR.There is likely to be the loss of signal and intersymbol interference (ISI) to increase Greatly.

Importantly, within the scope of the time order error that timing off-set is estimated is maintained some.NB transmitter can pass through PRACH, the accuracy of Lai Tigao timing estimation are sent using multiple fixed jump distances.

The timing accuracy of PRACH may be influenced by the tone jump distance for the PRACH.Between tone away from From the scaling that offer is determined for timing off-set.The accuracy of timing estimation is with the tone jump for PRACH Distance and increase.But such as with the remote UE of eNB, increase tone jump distance may be it is problematic, this It is because they face biggish delay.Therefore, it is possible to use different PRACH tones jumps distance, estimate to improve timing Count and meet the demand of the UE in depth covering.

Low CE level can jump in interval from biggish tone to be benefited.UE with low CE level can have for example more Good RSRP result and higher SNR, therefore undergo smaller delay.Distance is jumped by increasing tone, can be improved and be directed to The accuracy of the timing estimation of these UE with low CE level.But undergo higher CE horizontal (that is, having worse RSRP result and lower SNR) UE, it is likely that with eNB apart from farther and will be likely to undergo bigger delay.Bigger sound The fuzziness for adjusting jump distance to may cause these higher horizontal UE of CE increases.Therefore, shorter for UE horizontal for higher CE Tone jump distance PRACH may be more useful.In order to solve the need of both lower horizontal UE of the CE and horizontal UE of higher CE Ask, can be used two different tones jump distances (for example, shorter tone jump distance and bigger tone jump away from From) send PRACH.Although the accuracy of timing estimation, bigger tone can be improved in bigger tone jump distance Jump interval may cause the fuzziness for the horizontal UE of higher CE for undergoing bigger delay.By using two different tone jumps Distance, it is fuzzy due to caused by bigger tone jump interval to help to solve that smaller tone jump interval can be used Degree.

The timing accuracy of PRACH is related to tone jump distance.UE in higher CE level be have poor RSRP and Those of low SNR UE, therefore due to being likely to undergo biggish delay with the remote of eNB.Higher CE is in order to improve The timing accuracy of horizontal UE can jump distance using different tones for the identical UE in high CE level.Cause This, a kind of tone jump distance can provide small tone jump distance, to cover the larger delay that UE may be undergone.It can make Another assemble of symbol is sent with biggish jump distance, to increase the timing accuracy of PRACH.Fig. 5, which is depicted, to be shown First set of tones 502a, the 502b and the biggish tone of use for jumping distance d1 using lesser tone and sending jump distance D2 and the example of the second set of tones 504a, 504b sent.Although showing for two different fixed jump distances d1, d2 Go out two tones (for example, 502a, 502b and 504a, 504b), but can be according to each of fixed jump distance d1, d2 To send any number of tone.For example, can before sending multiple tones according to biggish jump distance d2, using compared with Short jump distance d1 sends four tone (not shown)s.Furthermore it is possible to use another different jump between tone Displacement sends four tone (not shown in FIG.) according to longer jump distance d2 from before.In addition, not according to the two The same fixed number of tones for jumping distance and using may be different.It is, for example, possible to use the jumps between adjacent tone Distance d1 carrys out n1 tone of quantity forwarded, and the second jump distance d2 between adjacent tone can be used to send the second quantity n2 A tone.Quantity n1, n2 can be same or different.Furthermore it is possible to be recycled and reused for using short jump distance and long jump Displacement from mode, for example, by will jump distance d1 be used for tone 506a, 506b and by jump distance d2 be used for tone 508a、508b。

It gives one example, d2 can be any integral multiple of d1, such as d2=n*d1, wherein n > 1.If d2=2*d1, And the first tone 502a is in position tone 2, then the second tone 502b will be in tone 7, so that d1=5.In this example embodiment, D2=10.Interval between second tone (tone 7) and third tone can be random number.For example, third tone may be at Tone 0 (it has the 4th tone in tone 10), this is because d2=10.Third tone (for example, 504a) might not In tone 0.Random jump distance can also be used between the tone of PRACH.For example, third tone 504a can be and the The random jump distance of two tone 502b, for example, as combined Fig. 4 to be directed to shown by 414.But after third tone Tone (for example, the 4th tone 504b) will have and three-toned distance 10.Its not required specific tone, sound Relationship (for example, d2=d1*n) of the distance between the tune between (for example, d1 and d2) and d1 and d2.

As shown in Figure 7, PRACH also may include additional set of tones, for example, 706,708.

Jump distance d1 and d2 can be with different size of fixed jump distance.These jump distances can in conjunction with Machine jumps distance to use.For example, Fig. 6 is shown between the tone of short jump distance d1 and the tone of larger jump distance d2 Random jump distance d3.These are fixed jump distance and can be relative to reftone.For shorter fixed jump distance With longer fixed jump for the two, reftone can be identical.

Jump distance can be recycled with the mode for PRACH, it is, for example, possible to use random jump distance, be connect down Then to use another random jump distance using short jump distance, long jump distance and short jump distance.It is then possible to Repeat the mode, for example, random jump distance, short jump distance, long jump distance, short jump apart from, random jump apart from, it is short Jump distance, long jump distance, short jump distance, random jump apart from ... or other modifications.

Receiver can receive PRACH tone according at least two different fixed jump distances, and can be used The two fix jump distance to determine that timing off-set is estimated.For example, receiver can jump the collection of distance according to tone first Close (d1, d2) to determine two groups of phase estimation phi1, phi2, as shown in Figure 7.Then, the first phase can be used in receiver (phi1) is estimated to select hypothesis corresponding with second phase estimation (phi2) in position.Then, can based on selected it is assumed that First phase estimation is updated.

For receiver, the difference of d2/d1 is bigger, then timing estimation assumes that phi2 will more preferably.But with hypothesis Quantity increase, there is the bigger possibility for select incorrect hypothesis, may cause inaccuracy timing estimate.

For example, if d2 is twice of distance d1, so that d2=2*d1, then be based on phi2, there are 3 for phi1 Phi estimates it is assumed that for example:

●phi1₁=phi2/2

●phi1₂=(phi2+2pi)/2

●phi1₃=(phi2-2pi)/2

Using these three it is assumed that receiver can determine best hypothesis:

●phi1_new=argmin (| phi1_i–phi1|)

=min (| phi1₁-phi1|,|phi1₂-phi1|,|phi1₃-phi1|)

Then, final phi1 estimation may is that

● final phi1_est=(phi1_new*2+phi1)/3

It is then possible to which delay is determined as and Phi1_estIt is corresponding:

Although providing the example for d2=2*d1, between distance d2 and d1, another can be used The different factors.For example, other than 3 Phi estimation above is assumed, other vacation also will be present if d2=4*d1 If:

● Phi1_4=(phi2+4pi)/4

● Phi1_5=(phi2-4pi)/4

In this example embodiment, using additional Phi estimation it is assumed that final phi1 estimation can be for example:

● final phi1_est=(phi1_new*4+phi1)/5

Final phi1_estIt can be the weighted array of phi1_new and phi1.For example, the option for the weight can be with Including zero.

On the other hand, by horizontal based on coverage enhancement (CE), between use or the transmission of selection NB PRACH Tone jumps distance, and transmitter can solve the accuracy of timing estimation.Fig. 8 A shows exemplary NB wireless communication system 800.ENB 802 provides the overlay area being located within boundary 804.Multiple users 804 are located at the overlay area 804 of eNB 802 Within.These users may be not entirely movable in the same time.But NB communication should be designed to support multiple use Family.

Good RSRP result and/or high SNR generally mean that UE 806 is close to center of housing estate 802.It is got over center of housing estate Close, the communication delay experienced between eNB and UE 806 will be smaller.

Lower RSRP result or lower SNR may be due to caused by any one in many factors.For example, The result can indicate UE 806 and eNB 802 at a distance of farther.This may also suggest that: more undesirable channel is logical for this Letter, for example, if UE 806 physically close to eNB 802, but in room located underground, or between UE 806 and eNB 802 With other barriers.In these cases, delay may be larger (for example, when UE 806 is located at eNB 802 at a distance of farther When position).Fig. 8 A shows 3 radiuses 808,810,812 for having different distance with eNB.

The timing accuracy of PRACH can be coupled with the tone jump distance for PRACH.The distance between tone mentions For for determining the scaling of timing off-set.The accuracy of timing estimation increases with the tone jump distance for PRACH Add.But for the remote UE 806 of eNB 802, increase tone jump distance may be it is problematic, this be by Biggish delay is undergone in them.Therefore, horizontal for different PRACH CE, different tone jump distances can be used. Each PRACH CE level can be associated with reference RSRP measured value or reference SNR measured value.Therefore, UE 806 can be used RSRP result and/or SNR determine its CE level.

For example, the first CE level can be associated with reference to RSRP and the first SNR with first.These reference levels can be usual Corresponding to the UE within the radius 808 closer to eNB 802.When UE 806 determines it with more higher with reference to RSRP than first When RSRP and/or SNR more higher than the first reference SNR, UE can determine that it is located within the first CE level, and can choose Distance is jumped with the horizontal corresponding tone of the first CE.

2nd CE level can be associated with reference to RSRP and the 2nd SNR with second.These reference levels can be corresponded to usually Do not have in the UE being located within radius 810, these UE close to eNB 802 as UE those of within the first radius 808, but compares UE within radius 812 is closer to eNB 802.It, can also but since CE level is measured based on RSRP and/or SNR It can include the UE 804 for being located within radius 808 but undergoing difference channel or other problems.When UE 806 determines that it has than second It is higher with reference to RSRP but not than first with reference to RSRP it is RSRP higher, and/or its have than second with reference to SNR it is higher but be not Than first when SNR higher with reference to SNR, UE can determine that it is located within the 2nd CE level, therefore can choose and the 2nd CE water Equal corresponding tone jump distance.

3rd CE level can be associated with reference to RSRP and the 3rd SNR with third.These reference levels generally correspond to: not having Just like UE those of within the first radius 808 or the second radius 810 equally close to eNB 802, within radius 812 UE.When the determination of UE 806, it has higher with reference to RSRP than third but RSRP higher with reference to RSRP not than first and second, And/or it has higher with reference to SNR than third but when not referring to than first and second the higher SNR of SNR, which can determine It is located within the 3rd CE level, can choose and the horizontal corresponding tone jump distance of the 3rd CE.

4th CE level can correspond to: be positioned within region 804 but with those of in radius 808,810 and 812 UE, which is compared, has more remote UE.When UE 806 determines that it has not than first, second or third is higher with reference to RSRP RSRP and/or its have than first, second or when third refers to SNR higher SNR, UE can determine that it is located at Within 4th CE level, it can choose and the horizontal corresponding tone jump distance of the 4th CE.

Although the example includes four CE levels, its determination for being merely illustrative CE level, to select tone to jump Displacement from.It is horizontal to can establish any number of CE, it is associated that any number of CE level can jump distance with tone.

For having more preferably those of RSRP result and/or higher SNR measured value CE horizontal, UE 806 is likely to more Close to eNB 802 and smaller delay will be undergone.Therefore, it can be used between the tone for the PRACH of UE bigger Tone jumps distance.In fig. 8 a, with those of being located at except radius 808 compared with UE, meet the standard of the first CE level thus Being likely on the UE 804 within radius 808 can be used for example bigger PRACH tone jump distance.

The UE for meeting the measurement standard of the 2nd CE level is likely within the second radius 810, but be located at radius 808 it Outside.Therefore, compared with having those of the first CE level UE, these UE may undergo somewhat greater delay.Therefore, with have The UE of first CE level is compared, and lesser PRACH tone jump distance can be used in the UE with the 2nd CE level.Be located at half UE is compared those of except diameter 810, these UE will also be likely to undergo lesser delay.Therefore, and for the third and fourth CE Horizontal tone jump distance is compared, and the tone jump distance for the 2nd CE level can be bigger.

Meet the UE of the measurement standard of the 3rd CE level, it is likely that be located within third radius 812, but be located at radius 808 Except 810.Therefore, compared with having those of the first and second CE levels UE, these UE will be likely to undergo slightly greater Delay.Therefore, compared with the UE with the first and second CE level, the UE with the 3rd CE level can be used lesser PRACH tone jumps distance, to avoid causing PRACH problem associated with the delay.With the UE being located at except radius 812 It compares, these UE will also be likely to undergo lesser delay.Therefore, compared with jumping distance for the tone of the 4th CE level, Tone jump distance for the 3rd CE level can be larger.

It is unsatisfactory for the UE of the measurement standard of the first, second or third CE level, it is likely that positioned at the overlay area of eNB 804 Within, but be located at except radius 808,810 and 812.Therefore, compared with there is those of the first, second, and third CE level UE, These UE may undergo biggish delay.To have the 4th CE compared with the UE with the first, second, and third CE level Lesser PRACH tone jump distance can be used in horizontal UE, to avoid causing PRACH problem associated with delay.

Therefore, among this four CE levels, the PRACH tone jump distance with the first CE level may be longest , the PRACH tone jump distance with the 4th CE level may be shortest.

Fig. 8 B shows the difference for the tone of low CE level and high CE level jump interval, as shown in Figure 8 A.With The UE of higher CE level is compared, and meets the UE of the standard for low CE level (that is, the UE is with preferable RSRP result and higher SNR, to undergo lesser delay) with bigger tone jump interval 802.Distance is jumped by increasing tone, is improved The accuracy of timing estimation.

Therefore, the UE of the standard of low CE level is unsatisfactory for (that is, the UE has worse RSRP compared with the UE of low CE level As a result with lower SNR), it is likely that with eNB 802 apart from farther, therefore will be likely to undergo bigger delay.Therefore, be directed to The tone jump distance of low CE level is compared, smaller for the tone jump distance 804 of high CE level.Although bigger tone is jumped For displacement from the accuracy that timing estimation can be improved, but for the UE for undergoing bigger delay, bigger tone jumps interval It is problematic.Therefore, it is possible to use smaller tone jump interval.

It can also include many aspects that are multiplexed to sets of transmission resources 900 of user that Fig. 9, which is shown,.To the resource of NB The operation being managed may include: to use FDM for different power types.For example, can for different CE levels come Establish transfer resource (it is also referred to as region).As shown in Figure 9, these regions can be with weave in.

It gives one example, random jump can be used in transmitter, but can provide in the transmission for its corresponding CE level Random jump is executed within source.

Can be horizontal according to the CE of transmitter, to answer using this user in conjunction with the use of biggish tone jump distance With.This also may include: to jump distance using two groups of tone, and one group of smaller distance having between tone, one group has sound Bigger distance between tune.Two groups of tones jump distance using can be used in conjunction with higher CE level, and minimum CE Level may only need single longer tone to jump distance.

UE can any one of in several ways mode, to obtain about the transfer resource for being directed to different CE levels Information.For example, the information can be sent to UE with aspect.Give one example, UE can before sending PRACH, The explicit signaling about the transfer resource for CE level is received from eNB.It can be using such signaling as system information block (SIB) it is sent to UE.In another example, it can be fixed for the transfer resource of CE level or standardized, and It and is known to UE.In another example, horizontal for different CE, it is understood that there may be the fixed options of transfer resource are known Option.Then, an option in these options can be sent with signal to UE, so that UE knows which of these options select Item should be used for its specific PRACH transmission.

Position in the first tone of PRACH and between the data resource for the transmission of corresponding data there may be reflecting It penetrates.Figure 10 shows corresponding with data resource 1010 for the PRACH resource of tone 1002；PRACH for tone 1004 Resource is corresponding with data resource 1012；PRACH resource for tone 1006 is corresponding with data resource 1014；And it is used for The PRACH resource of tone 1008 is corresponding with data resource 1016.This makes UE can know when that the expected data from eNB disappear Breath.As described above, the pitch interval for PRACH may be different compared with the pitch interval transmitted for data.Example Such as, it can be PRACH15kHz/16 for the pitch interval of PRACH, and the pitch interval for being used for data transmission can be 15kHz Or 3.75Hz.Therefore, the first tone (for example, msg1) of PRACH can be mapped to and some tone or time grid phase Corresponding data transmission resources (for example, being directed to msg2 and msg3).

Different CE levels can be associated from different timing advance (TA) granularities.For example, having good RSRP/ high Higher TA granularity can be used in the low CE level of SNR.(it is lower with poor RSRP/ by UE with higher CE level SNR lower TA granularity) can be used.For example, the TA granularity that wherein 1 bit corresponds to 0.5 μ s can be used in the low horizontal UE of CE, And the TA granularity that wherein 1 bit corresponds to 1 or 2 μ s can be used in high level UE.

CE level can be executed under for the idle state of UE or connection status to determine.For example, can be together with initial power Rate selection comes together to carry out the determination of CE level.

Figure 11 is a kind of flow chart 1100 of wireless communications method.The wireless communication can be NB wireless communication.Other Among the narrow band communication of type, wireless communication can be NB-IOT.The communication can be limited to narrowband systems bandwidth (for example, 1RB), It can be realized multi-user communication.This method can be by such as UE (for example, UE 104,350,804,1550, device 1202/ 1202 ') transmitter etc executes.

At 1102, UE sends the first tone of PRACH.At 1104, UE is according to the first sound with the transmission at 1102 Phase modulation sends the second tone of PRACH away from the first jump distance.At 1106, UE sends the third tone of PRACH, 1108 Place, UE send the 4th tone of PRACH according to the third tone with the transmission at 1106 at a distance of the second jump distance.These sounds The name (that is, the first tone, the second tone, third tone and the 4th tone) of tune does not imply that the sequence that they are transmitted.For example, Third tone and the 4th tone can be sent before the first tone and the second tone.

First tone can be d1, and the second tone can be d2, for example, as shown in figures 4 to 7.For example, second jump away from From can be d2, the first jump distance (for example, d1) can be greater than.Second jump distance can correspond to the first jump distance Multiplied by the integer for being greater than 1.Therefore, the second jump distance can correspond to the first jump distance multiplied by the integer for being greater than 1, for example, D2=d1*n, wherein n is greater than 1 zoom factor (it is preferably integer).

The use (for example, d2) of bigger tone jump distance can be improved the timing accuracy of PRACH, and shorter distance (for example, d1) can permit with eNB apart from farther away UE.Therefore, in this example embodiment, the first tone and the second tone can be similar In set 502 or 506, third tone and the 4th tone can be similar to the set 504 or 508 in Fig. 5 and/or Fig. 6.

First jump distance and the second jump distance can be different fixed jump distance.With the first and second tones it Between and the third and fourth tone between fixed range (for example, d1 or d2) compare, the first tone 502a and third tone Jump distance between 504a can correspond to random jump distance d3.Since the name of tone is (that is, the first tone, the second sound Adjust etc.) do not imply that the sequence that they are transmitted.Give one example, the tone group with different fixed jump distances it Between, random jump distance can be used.It gives one example, there is 4 tones of the second group of fixed jump distance d2, Ke Yiyu There is the 4th tone in 4 tones of the first group with fixed jump distance d1 random group to jump distance.Similarly, exist Such as the jump distance between the 4th tone and the first tone 502a in set 508 can correspond to random jump distance.Cause This, at 1110, random jump distance is can be used to send the additional tone of PRACH in UE.One mode can be used in UE The tone for sending PRACH, it is, for example, possible to use random jump distance, next using short jump distance, long jump apart from, it is short Distance is jumped, another random jump distance is then used.It is then possible to repeat the mode, for example, random jump distance, it is short Jump distance, long jump distance, short jump distance, random jump distance, short jump distance, long jump apart from, short jump apart from, Random jump distance ....

Make to illustrate with dashed lines optional aspect in Figure 11.

As shown in 1112, UE can optionally determine its CE level, to select to jump based on CE level at 1116 Displacement is from for example, as described in connection of figure 8.It can such as be tied based on CE level is determined for UE corresponding RSRP or SNR It closes described in Fig. 8.Then, UE can be by the selection of the first jump distance based on the determination of CE level.For example, when CE level is low When reference levels, first distance can be chosen to the first jump distance, it, can be by the when CE level is higher than reference levels Two distances are chosen to the first jump distance, and wherein first distance is greater than second distance.Therefore, as combined described by Fig. 6 and Fig. 7 , it can be horizontal for the low CE with more preferably RSRP/ high SNR, bigger jump distance 812 is selected, it can be for worse The high CE of the low SNR of RSRP/ is horizontal, selects smaller jump distance 814.

The example can be horizontal for high CE, wherein selected first jump distance will be smaller (for example, being similar to d1)。

In addition, UE can be with receiving resource allocation information at 1114.The resource allocation information can be notified to UE and CE Horizontal associated resource.For example, UE can receive for the resource allocation by the Tone Map in transfer resource to CE level Information.The first tone, the second tone, third tone and the 4th can be sent in the transfer resource indicated by resource allocation information Tone.As described in conjunction with Figure 9, each CE level can be associated with the tone in transfer resource, these transfer resources can To be to interweave each other.

In another example, CE level may map to the tone in constant transmissions resource, can provide in constant transmissions The first tone, the second tone, third tone and the 4th tone are sent in source.

In another example, CE level may map to the tone in multiple constant transmissions resources, and at 1114, UE can To receive and the horizontal corresponding resource allocation information of the CE.It is then possible to multiple fixations indicated by resource allocation information The first tone, the second tone, third tone and the 4th tone are sent in a constant transmissions resource in transfer resource.

Different CE levels can be associated from different TA granularities so that the first CE level with and the 2nd CE level it is different TA granularity it is associated.

For the interval between the tone of PRACH, can with the tone for corresponding downlink transmission it Between interval it is different.Corresponding uplink number can will be used for after at least the first Tone Map to successful PRACH transmission According to transmission or the position of downlink transmission, for example, as described in conjunction with Figure 10.This makes UE can know when to be expected Data transmission from eNB.

Figure 12 is the conceptual data flow figure of the data flow between the different units/component shown in exemplary means 1202 1200.The device can be UE.The device includes: for the receiving unit 1204 from the reception of eNB 1250 communication 1220 and to be used for The transmission assembly 1206 of communication 1222 (for example, the PRACH in conjunction with described in Fig. 4-10 is transmitted) is sent to eNB 1250.The device PRACH component 1208 including multiple tones for generating PRACH, wherein the PRACH has at least two between tone Different jump distance, for example, as combined described in Fig. 4-10.PRACH component 1208 may include jump apart from component 1210, which determines the jump distance for PRACH transmission apart from component 1210.These jump distances may include two not Same fixed range and random jump distance etc..

PRACH component 1208 may include that CE level determines component 1212, the CE level determine component 1212 for example using The corresponding RSRP/SNR of the device come determine CE level.Receiving unit 1204 can determine that component 1212 is provided to CE element RSRP/SNR.CE level determines that component 1212 can provide CE level to jump distance selection component 1210 at 1216, so as to For selecting to jump distance.Then, jump can be selected between the tone transmission of PRACH apart from component 1210 based on CE level At least one jump distance.

Transmission assembly 1206 can be configured as the tone for sending PRACH, for example, the first tone, the second sound in Figure 11 Any one of tune, third tone and the 4th tone tone.For example, PRACH component 1208 can be at 1224 to transmission group Part provides PRACH and distance.These different jump distances can be used to send the tone of PRACH, example in transmission assembly 1206 Such as, as described in conjunction with Figure 11.

Receiving unit 1204 can be configured as the resource allocation for receiving and being directed to CE level, which can be provided To the resource allocation component 1218 of PRACH component 1208.Receiving unit can provide these resources point to PRACH component 1208 Match, so that PRACH component 1208 is able to use indicated transfer resource to generate PRACH.

The apparatus may include each frame in the algorithm in the aforementioned flowchart for executing Figure 11 and combine Fig. 4-10 The additional assemblies of many aspects.Therefore, each frame in the aforementioned flowchart of Figure 11 can be executed by a component, The apparatus may include one or more components in these components.These components can be specially be configured as executing it is described The one or more hardware componenies of processing/algorithm, one or more of hardware componenies can be described by being configured to execute Reason/algorithm processor realizes that the processing/algorithm is stored in computer-readable medium to be realized by processor, Either its certain combination.

Figure 13 is the Figure 130 0 shown for the hard-wired example for using the device 1202' of processing system 1314.Place Bus architecture can be used to realize in reason system 1314, and wherein the bus architecture is usually indicated with bus 1324.According to processing The concrete application and overall design constraints of system 1314, bus 1324 may include any number of interconnection bus and bridge It connects.Bus 1324 will include one or more processors and/or hardware component (its with processor 1304, component 1204,1206, 1208,1210,1212,1218 indicate) and the various circuits of computer-readable medium/memory 1306 link together. Bus 1324 can also link such as clock source, peripheral equipment, voltage regulator and electric power management circuit or the like it is various its Its circuit, wherein these circuits are it is known in the art, therefore no longer describing any further.

Processing system 1314 may be coupled to transceiver 1310.Transceiver 1310 is coupled to one pair or plurality of antennas 1320. Transceiver 1310 provides a mean for the unit that transmission medium is communicated with various other devices.Transceiver 1310 from one pair or Plurality of antennas 1320 receives signal, and information is extracted from received signal, the information of extraction is supplied to processing system 1314 (specifically, receiving unit 1204).In addition, transceiver 1310 also receives information (specifically, transmission from processing system 1314 Component 1206), and generate the signal that be applied to one pair or plurality of antennas 1320 based on received information.Processing system 1314 include the processor 1304 for being coupled to computer-readable medium/memory 1306.Processor 1304 is responsible for general procedure, Including executing the software stored on computer-readable medium/memory 1306.When the software is executed by processor 1304, so that Processing system 1314 is executed above with respect to various functions described in any specific device.Computer-readable medium/memory 1306 can be also used for storing the data operated when processor 1304 executes software.The processing system 1314 further includes component 1204, at least one component in 1206,1208,1210,1212 and 1218.These components can be to be transported in processor 1304 Capable, resident/component software for being stored in computer-readable medium/memory 1306, one for being coupled to processor 1304 or Multiple hardware componenies or its certain combination.Processing system 1314 can be the component of UE 350, and may include memory 360, and/or including at least one of TX processor 368, RX processor 356 and controller/processor 359.

In one configuration, device for wireless communications 1202/1202' includes: to be used to send the first PRACH tone, The 2nd PRACH tone is sent at a distance of the first jump distance according to the first PRACH tone, sends the 3rd PRACH tone, and According to the unit for sending the 4th PRACH tone at a distance of the second jump distance with the 3rd PRACH tone；For according to random jump Distance sends the unit of additional PRACH tone；For selecting first to jump between the tone transmission of PRACH based on CE level Displacement from unit；For determining the unit of CE level；Unit for receiving resource allocation information.Foregoing units can be dress One or more components in 1202 aforementioned components are set, and/or are configured as executing the dress of function described in these foregoing units Set 1202 ' processing system 1314.As described above, processing system 1314 may include TX processor 368,356 and of RX processor Controller/processor 359.Therefore, in one configuration, foregoing units can be configured as executing described in these foregoing units TX processor 368, RX processor 356 and the controller/processor 359 of function.

Figure 14 is a kind of flow chart of wireless communications method.The wireless communication can be NB wireless communication.In other types Narrow band communication among, which can be NB-IOT.The communication can be limited to narrowband systems bandwidth (for example, 1RB), It can be realized multi-user communication.This method can be by such as eNB (for example, eNB 102,310,802,1250, device 1502/ 1502 ') receiver etc executes.

At 1402, eNB jumps distance according to the first tone to receive the first set of tones of PRACH.At 1404, ENB jumps distance according to the second tone to receive the second set of tones of PRACH.These tones name (that is, the first tone, Second tone, third tone and the 4th tone) do not imply that the sequence that they are transmitted.For example, can be in the first tone and/or Before two tones, third tone and/or the 4th tone are sent.

First tone can be d1, and the second tone can be d2, for example, as shown in figures 4 to 7.For example, second jump away from From can be d2, and the first jump distance (for example, d1) can be greater than.Second jump distance can correspond to the first jump away from From multiplied by the integer for being greater than 1.Therefore, the second jump distance can correspond to the first jump distance multiplied by the integer for being greater than 1, example Such as, d2=d1*n, wherein n is greater than 1 zoom factor (it is preferably integer).

The use (for example, d2) of bigger tone jump distance can be improved eNB and be directed to the timing accuracy that PRACH is carried out, And shorter distance (for example, d1) can permit with eNB apart from farther away UE.Therefore, in this example embodiment, the first tone and second Tone can be similar to set 502 or 506, and third tone and the 4th tone can be similar to the set 504 in Fig. 5 and/or Fig. 6 Or 508.

First jump distance and the second jump distance can be different fixed jump distance.With the first and second tones it Between and the third and fourth tone between fixed range (for example, d1 or d2) compare, the first tone 502a and third tone Jump distance between 504a can correspond to random jump distance d3.

After receiving the two set of tones, at 1406, eNB determines first group based on the first set of tones Phase estimation (phi1) determines second group of phase estimation (phi2) based on the second set of tones.

At 1408, eNB can also estimate (phi1) using first phase to select to estimate (phi2) phase with second phase Corresponding estimation is assumed.For example, short jump distance has less fuzziness, therefore, can be used for helping to solve with it is longer Jump is apart from corresponding fuzziness.

After selecting estimation to assume at 1408, at 1410, eNB can be assumed based on selected estimation come to first Phase estimation is updated.

In the method for Figure 14, the another aspect that receiver is directed in conjunction with described in Fig. 4-11 can also be performed.

Figure 15 is the conceptual data flow figure of the data flow between the different units/component shown in exemplary means 1502 1500.The device can be the receiver of such as eNB 102,310,802,1250 etc.The device includes receiving unit 1504, The receiving unit 1504 be used to receive from UE 1550 UL communication 1518 (e.g., including in the first tone jump distance Second set of tones of the first set of tones of PRACH and the PRACH in the second tone jump distance).The device includes passing Defeated component 1506, the transmission assembly 1506 are used to send DL communication 1516 to UE 1550.The device includes estimating with timing off-set The PRACH component 1508 of component 1510 is counted, wherein timing off-set estimated component 1510 determines first based on the first set of tones The phase estimation (phi1) of group, and determine based on the second set of tones second group of phase estimation (phi2), such as combine figure Described in 14.

The apparatus may include each frame in the algorithm in the aforementioned flowchart for executing Figure 14 and combine Fig. 4-10 The additional assemblies of described many aspects.Therefore, each frame in the aforementioned flowchart of Figure 14 can be held by a component Row, and device may include one or more components in these components.These components, which can be, specially to be configured as executing One or more hardware componenies of the processing/algorithm, these one or more hardware componenies can be as being configured to described in execution Processing/algorithm processor realizes that the processing/algorithm is stored among computer-readable medium so as to by processor reality Existing or its certain combination.

Figure 16 is the Figure 160 0 for showing the hard-wired example for the device 1502' using processing system 1614.Place Bus architecture can be used to realize in reason system 1614, and wherein the bus architecture is usually indicated with bus 1624.According to processing The concrete application and overall design constraints condition of system 1614, bus 1624 may include any number of interconnection bus and bridge It connects.Bus 1624 will include one or more processors and/or hardware component (its with processor 1604, component 1504,1506, 1508,1510 indicate) and the various circuits of computer-readable medium/memory 1606 link together.Bus 1624 may be used also With link such as clock source, peripheral equipment, voltage regulator and electric power management circuit etc various other circuits, wherein these Circuit is it is known in the art, therefore no longer describing any further.

Processing system 1614 may be coupled to transceiver 1610.Transceiver 1610 is coupled to one pair or plurality of antennas 1620. Transceiver 1610 provides a mean for the unit that transmission medium is communicated with various other devices.Transceiver 1610 from one pair or Plurality of antennas 1620 receives signal, information is extracted from received signal, the information of extraction is supplied to processing system 1614 (specifically, receiving units 1504).In addition, transceiver 1610 receives information (specifically, passing from processing system 1614 Defeated component 1506), and generate the signal that be applied to one pair or plurality of antennas 1620 based on received information.Processing system 1614 include the processor 1604 for being coupled to computer-readable medium/memory 1606.Processor 1604 is responsible for general procedure, packet Include the software stored on execution computer-readable medium/memory 1606.When the software is executed by processor 1604, so that place Reason system 1614 is executed above with respect to various functions described in any specific device.Computer-readable medium/memory 1606 It can be also used for storing the data operated when processor 1604 executes software.Processing system 1614 further include component 1504, 1506, at least one component in 1508,1510.These components, which can be, to be run in processor 1604, be resident/is stored in meter Component software in calculation machine readable medium/memory 1606, the one or more hardware componenies for being coupled to processor 1604 or Its certain combination.Processing system 1614 can be the component of eNB 310, and may include memory 376, and/or including TX At least one of processor 316, RX processor 370 and controller/processor 375.

In one configuration, device for wireless communications may include any one of following: for according to first Tone jumps distance to receive the first set of tones of PRACH, jumps distance according to the second tone to receive the second sound of PRACH Assemble the unit of conjunction；For determining first group of phase estimation based on the first set of tones, based on the second set of tones come really The unit of fixed second group of phase estimation；Estimation corresponding with second phase estimation is selected for using first phase to estimate The unit of hypothesis；And for assuming the unit to estimate to be updated to first phase based on selected estimation.

Unit above-mentioned can be one or more components in the aforementioned components of the device, and/or be configured as executing The processing system (e.g., including at least one processor) of the device of function described in these foregoing units.As described above, processing system System may include TX processor 316, RX processor 370 and controller/processor 375.Therefore, in one configuration, aforementioned list Member can be configured as executing the TX processor 316 of function described in these foregoing units, RX processor 370 and controller/ Processor 375.

It should be appreciated that the level of specific order or box in process/flow chart disclosed herein is example side One example of method.It should be appreciated that according to design preference, can rearrange specific order in these process/flow charts or The level of box.Furthermore, it is possible to which some boxes are combined or are omitted.Appended claim to a method is provided with example sequence The element of various boxes, but it is not meant to its limitation by the specific order or hierarchy presented.

There is provided herein foregoing description so that any person skilled in the art can implement various aspects described herein. To those skilled in the art, the various modifications in terms of these will be apparent, and defined herein General principles can be applied to other aspects.Therefore, claim is not intended to be limited to aspects illustrated herein, but with The entire protection scope of claim language is consistent, wherein unless specifically stated, the element of singular does not imply that " one and only one ", but indicate " one or more "." illustrative " word used herein means " to be used as example Son, illustration or explanation ".Here depicted as " exemplary " any aspect be not necessarily to be construed as it is more more preferable than other aspects or more Tool advantage.Unless stated otherwise, otherwise "some" references of term are one or more.Such as " at least one in A, B or C It is a ", " one or more of A, B or C ", " at least one of A, B and C ", " one or more of A, B and C " and " A, B, the combination of C or any combination thereof " etc, any combination including A, B and/or C, and may include multiple A, multiple B Or multiple C.Specifically, such as " at least one of A, B or C ", " one or more of A, B or C ", " in A, B and C At least one ", the combination of " one or more of A, B and C " and " A, B, C or any combination thereof " etc can be only Only A, only B, only C, A and B, A and C, B and C or A and B and C, wherein any such combination may include A, B or C In one or more members or some members.Or it later will be as known known to those skilled in the art , with all structure and functions of the element equivalent through various aspects described herein be clearly included in this with incorporation way Text, and be intended to be included within the scope of claim covers.In addition, no matter whether being expressly recited in the claims These disclosures, disclosure herein are not intended to contribute to the public's.Word " module ", " element ", " is set " mechanism " It is standby " etc. may not be word " unit " substitution word.Therefore, the element of claim is not necessarily to be construed as functional module, removes It is non-clearly to state the element using phrase " unit being used for ... ".

Claims (40)

1. a kind of method of wireless communication, comprising:

The first symbol is sent on the first tone of monotone Physical Random Access Channel (PRACH)；

According to first tone, at a distance of the first jump distance, second is sent on the second tone of the monotone PRACH Symbol；

Third symbol is sent on the third tone of the monotone PRACH；And

, at a distance of the second jump distance, the 4th is sent on the 4th tone of the monotone PRACH according to the third tone Symbol, wherein the second jump distance is different from the first jump distance.

2. according to the method described in claim 1, wherein, the wireless communication includes narrowband wireless communication.

3. according to the method described in claim 1, wherein, the second jump distance is greater than the first jump distance.

4. according to the method described in claim 1, wherein, the second jump distance correspond to the first jump distance multiplied by Integer greater than 1.

5. according to the method described in claim 1, wherein, first euphonic first symbol and the third tone On the third symbol between third jump distance correspond to random jump distance.

6. according to the method described in claim 1, wherein, the 4th euphonic 4th symbol and first tone On first symbol between third jump distance correspond to random jump distance.

7. according to the method described in claim 1, further include:

Send additional symbols on the additional tone of the PRACH using third jump distance, the third jump distance be with Machine jumps distance.

8. according to the method described in claim 1, further include:

Determine coverage enhancement (CE) level；

Based between tone transmission of the CE level to select the PRACH it is described first jump distance, wherein first away from From being selected as with a distance from first jump when the CE level is lower than reference levels, and second distance is in the CE water It puts down and is selected as the first jump distance when being higher than the reference levels, and

Wherein, the first distance is greater than the second distance.

9. according to the method described in claim 1, further include:

It receives for by the resource allocation information of the Tone Map in transfer resource to coverage enhancement (CE) level, and wherein, First euphonic first symbol, second euphonic second symbol, the euphonic institute of the third Stating third symbol and the 4th euphonic 4th symbol is the transfer resource indicated by the resource allocation information Middle transmission.

10. according to the method described in claim 9, wherein, the CE horizontal map to the tone in constant transmissions resource, and Wherein, the described first euphonic first symbol, second euphonic second symbol, on the third tone The third symbol and the 4th euphonic 4th symbol be to be sent in the constant transmissions resource.

11. according to the method described in claim 9, wherein, the CE horizontal map to the tone in multiple constant transmissions resources, The method also includes:

It receives and the horizontal corresponding resource allocation information of the CE, wherein first euphonic first symbol, institute State the second euphonic second symbol, the euphonic third symbol of the third and described 4th euphonic described 4th symbol is the constant transmissions money in the multiple constant transmissions resource as indicated by the resource allocation information It is sent in source.

12. according to the method described in claim 1, further include:

Determine coverage enhancement (CE) level, wherein the first CE level is the timing advance granularity phase different from the 2nd CE level Association is with the tone transmission for the PRACH.

13. according to the method described in claim 1, being corresponding to being used for for the interval between the tone of the PRACH wherein Uplink or downlink transmission tone between interval it is different.

14. a kind of device for being carried out wireless communication at user equipment, comprising:

For receiving the unit of downlink communication from base station；And

For sending the first symbol to the list of the base station on the first tone of monotone Physical Random Access Channel (PRACH) Member, wherein the unit for transmission jumps distance in the monotone PRACH at a distance of first according to first tone The second tone on send the second symbol, on the third tone of the monotone PRACH send third symbol, and according to The third tone sends the 4th symbol at a distance of the second jump distance on the 4th tone of the monotone PRACH, wherein institute It is different from the first jump distance to state the second jump distance.

15. device according to claim 14, wherein the wireless communication includes narrowband wireless communication, and wherein, institute It states the second jump distance and is greater than the first jump distance.

16. device according to claim 14, wherein the second jump distance corresponds to the first jump distance and multiplies To be greater than 1 integer.

17. device according to claim 14, wherein first euphonic first symbol and the third sound Third jump distance between the third symbol on tune corresponds to random jump distance or the 4th euphonic institute The forth jump displacement between the 4th symbol and first euphonic first symbol is stated from corresponding to a distance from random jump.

18. device according to claim 14, wherein the unit for transmission is using third jump distance described Additional symbols are sent on the additional tone of PRACH, the third jump distance is random jump distance.

19. device according to claim 14, further includes:

For determining the unit of coverage enhancement (CE) level；

For based on the unit of the first jump distance between tone transmission of the CE level to select the PRACH, Wherein, first distance the CE level be lower than reference levels when be selected as it is described first jump distance, and second away from From the CE level be higher than the reference levels when be selected as it is described first jump with a distance from, and

Wherein, the first distance is greater than the second distance.

20. device according to claim 14, wherein described to be configured as receiving for that transmit for received unit Tone Map in resource to coverage enhancement (CE) level resource allocation information, and wherein, the first euphonic institute State the first symbol, second euphonic second symbol, the euphonic third symbol of the third and described Four euphonic 4th symbols be sent in the transfer resource indicated by the resource allocation information, and

Wherein, the CE horizontal map to it is following items at least one of:

Tone in constant transmissions resource, and wherein, on first euphonic first symbol, second tone Second symbol, the euphonic third symbol of the third and the 4th euphonic 4th symbol be It is sent in the constant transmissions resource, or

Tone in multiple constant transmissions resources, wherein described corresponding with the CE level for the reception of received unit Resource allocation information, wherein first euphonic first symbol, second euphonic second symbol, The euphonic third symbol of third and the 4th euphonic 4th symbol are believed in the resource allocation It is sent in a constant transmissions resource in the indicated the multiple constant transmissions resource of breath.

21. device according to claim 14, further includes:

For determining the unit of coverage enhancement (CE) level, wherein the first CE level is the timing different from the 2nd CE level Granularity is associated with the tone transmission for the PRACH in advance.

22. device according to claim 14, wherein be different from being used for for the interval between the tone of the PRACH Interval between corresponding uplink or the tone of downlink transmission, and wherein, at least described first tone quilt It is mapped to the position after successful PRACH transmission for corresponding uplink data transmission or downlink transmission.

23. a kind of device for wireless communications, comprising:

Memory；And

At least one processor is coupled to the memory and is configured as:

The first symbol is sent on the first tone of monotone Physical Random Access Channel (PRACH)；

According to first tone, at a distance of the first jump distance, second is sent on the second tone of the monotone PRACH Symbol；

Third symbol is sent on the third tone of the monotone PRACH；And

, at a distance of the second jump distance, the 4th is sent on the 4th tone of the monotone PRACH according to the third tone Symbol, wherein the second jump distance is different from the first jump distance.

24. device according to claim 23, wherein the wireless communication includes narrowband wireless communication, and wherein, institute It states the second jump distance and is greater than the first jump distance.

25. device according to claim 23, wherein the second jump distance corresponds to the first jump distance and multiplies To be greater than 1 integer.

26. device according to claim 23, wherein first euphonic first symbol and the third sound Third jump distance between the third symbol on tune corresponds to random jump distance or the 4th euphonic institute The forth jump displacement between the 4th symbol and first euphonic first symbol is stated from corresponding to a distance from random jump.

27. device according to claim 23, wherein at least one described processor is also configured to

Send additional symbols on the additional tone of the PRACH using third jump distance, the third jump distance be with Machine jumps distance.

28. device according to claim 23, wherein at least one described processor is also configured to

Determine coverage enhancement (CE) level；

Based between tone transmission of the CE level to select the PRACH it is described first jump distance, wherein first away from From being selected as with a distance from first jump when the CE level is lower than reference levels, and second distance is in the CE water It puts down and is selected as the first jump distance when being higher than the reference levels, and

Wherein, the first distance is greater than the second distance.

29. device according to claim 23, wherein at least one described processor is also configured to

It receives for by the resource allocation information of the Tone Map in transfer resource to coverage enhancement (CE) level, and wherein, First euphonic first symbol, second euphonic second symbol, the euphonic institute of the third Stating third symbol and the 4th euphonic 4th symbol is the transfer resource indicated by the resource allocation information Interior transmission, wherein the CE horizontal map at least one in following items:

Tone in constant transmissions resource, and wherein, on first euphonic first symbol, second tone Second symbol, the euphonic third symbol of the third and the 4th euphonic 4th symbol be It is sent in the constant transmissions resource, or

Tone in multiple constant transmissions resources, wherein at least one described processor is additionally configured to receive and the CE water Put down corresponding resource allocation information, wherein first euphonic first symbol, described second euphonic described The euphonic third symbol of second symbol, the third and the 4th euphonic 4th symbol are in the money Transmission in a constant transmissions resource in the multiple constant transmissions resource indicated by information is distributed in source.

30. device according to claim 23, wherein at least one described processor is also configured to

Determine coverage enhancement (CE) level, wherein the first CE level is the timing advance granularity phase different from the 2nd CE level Association is with the tone transmission for the PRACH.

31. device according to claim 23, wherein be different from being used for for the interval between the tone of the PRACH Interval between corresponding uplink or the tone of downlink transmission, and wherein, it will at least described first tone It is mapped to the position after successful PRACH transmission for corresponding uplink data transmission or downlink transmission.

32. a kind of non-transitory of computer-executable code of storage for being executed by least one processor is computer-readable Medium, wherein the computer-executable code is for wireless communication, and the computer-executable code includes for holding The following code operated of row:

The first symbol is sent on the first tone of monotone Physical Random Access Channel (PRACH)；

According to first tone, at a distance of the first jump distance, second is sent on the second tone of the monotone PRACH Symbol；

Third symbol is sent on the third tone of the monotone PRACH；And

, at a distance of the second jump distance, the 4th is sent on the 4th tone of the monotone PRACH according to the third tone Symbol, wherein the second jump distance is different from the first jump distance.

33. non-transitory computer-readable medium according to claim 32, wherein it is described wireless communication include narrowband without Line communication, and wherein, the second jump distance is greater than the first jump distance.

34. non-transitory computer-readable medium according to claim 32, wherein the second jump distance corresponds to The first jump distance is multiplied by the integer for being greater than 1.

35. non-transitory computer-readable medium according to claim 32, wherein described first euphonic described Third jump distance between one symbol and the euphonic third symbol of the third corresponds to random jump distance, or The forth jump displacement between 4th euphonic 4th symbol and first euphonic first symbol from Corresponding to random jump distance.

36. non-transitory computer-readable medium according to claim 32 further includes generation for performing the following operations Code:

Send additional symbols on the additional tone of the PRACH using third jump distance, the third jump distance be with Machine jumps distance.

37. non-transitory computer-readable medium according to claim 32 further includes generation for performing the following operations Code:

Determine coverage enhancement (CE) level；

It is horizontal based on the CE, select the first jump distance between the tone transmission of the PRACH, wherein first away from From being selected as with a distance from first jump when the CE level is lower than reference levels, and second distance is in the CE water It puts down and is selected as the first jump distance when being higher than the reference levels, and

Wherein, the first distance is greater than the second distance.

38. non-transitory computer-readable medium according to claim 32 further includes generation for performing the following operations Code:

It receives for by the resource allocation information of the Tone Map in transfer resource to coverage enhancement (CE) level, and wherein, First euphonic first symbol, second euphonic second symbol, the euphonic institute of the third It states third symbol and the 4th euphonic 4th symbol is provided in the transmission as indicated by the resource allocation information It is sent in source, wherein the CE horizontal map at least one in following items:

Tone in constant transmissions resource, and wherein, first euphonic first symbol, second tone On second symbol, the euphonic third symbol of the third and the 4th euphonic 4th symbol be It is sent in the constant transmissions resource, or

Tone in multiple constant transmissions resources, further includes code for performing the following operations:

It receives and the horizontal corresponding resource allocation information of the CE, wherein first euphonic first symbol, institute State the second euphonic second symbol, the euphonic third symbol of the third and described 4th euphonic described 4th symbol is a constant transmissions resource in the multiple constant transmissions resource indicated by the resource allocation information Interior transmission.

39. non-transitory computer-readable medium according to claim 32 further includes generation for performing the following operations Code:

Determine coverage enhancement (CE) level, wherein the first CE level is the timing advance granularity phase different from the 2nd CE level Association is with the tone transmission for the PRACH.

40. non-transitory computer-readable medium according to claim 32, wherein for the PRACH tone it Between interval be different from for interval between corresponding uplink or the tone of downlink transmission, and wherein, At least described first tone is mapped to after successful PRACH transmission for corresponding uplink data transmission or downlink The position of link data transfer.